Cristina Emilia Panaiotu

Cristina Emilia Panaiotu
University of Bucharest | Unibuc · Faculty of Geology and Geophysics

About

24
Publications
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603
Citations
Citations since 2017
0 Research Items
168 Citations
2017201820192020202120222023051015202530
2017201820192020202120222023051015202530
2017201820192020202120222023051015202530
2017201820192020202120222023051015202530

Publications

Publications (24)
Article
Full-text available
A well-developed Triassic carbonate platform is exposed in the eastern part of the Tulcea Unit, in the Cimmerian North Dobrogean Orogen, southeastern Romania. Facies analysis of the 200 m thick succession of lower Middle Anisian limestones exposed in a large limestone quarry south of the village of Mahmudia suggests a transition from upper slope to...
Article
Full-text available
Microfacies and diagenetic features of the hardgrounds and condensed horizons occurring in Middle Jurassic carbonate rocks from Tătarului Gorges (Bucegi Mountains, SE Carpathians) are studied in the present paper. Several different microfacies have been distinguished in the studied sections: bioclastic packstones and wackestones with echinoderm fra...
Article
Full-text available
An unusual fossil assemblage dominated by superabundant rhynchonellid brachiopods in a stromatactis mud-mound is recorded from the Hăghimaş Mountains (Eastern Carpathians), Romania. The mound mainly consists of bioclastic wackestones to packstones with a very rich macrofauna including crinoids, sponges, juvenile ammonites, and echinoids. The brachi...
Conference Paper
Along the Mures Valley, near Geoagiu, there are many occurrences of smaller or larger travertine deposits. Their genesis is controlled by the presence of marbles (Rapolt Formation) and by the tectonic fractures associated to the Mures Valley. Quaternary travertine deposits from Carpinis and Geoagiu quarries have been investigated from petrografic,...
Article
This paper reports on the palaeomagnetism of 10 localities from Upper Cretaceous sediments of the Sânpetru Formation exposed in the Haţeg Basin (South Carpathians, Romania). The Sânpetru Formation is one of the best exposed latest Cretaceous continental successions of Eastern Europe being famous for its unique assemblage of dinosaurs, mammals and o...
Article
Full-text available
The IRSL dating method is applied to alkali feldspar grains (40-60 μm) from Upper and Middle Pleistocene (< 300 ka) loess deposits from two loessic sequences, at Mostistea and Mircea Voda, in southeastern Romania, following the previous IRSL investigation of the Tuzla loessic section performed by Balescu et al. (2003), within the same area. The IRS...
Article
Abstract Romanian loess -palaeosol sequences are amongst the thickest and most complete available in Europe. These deposits represent an extended continental record of environmental and climatic change during at least five glacial/interglacial cycles. Their chronology, however, is mainly based on relative methods. In this paper, we investigate whe...
Conference Paper
Full-text available
The brachiopod assemblage dominated by the genus Lacunosella from Fagul Oltului (central part, western Haghimas or Hasmas Mountains) represent an outstanding fossil assemblage. The presence of this very rich level with Lacunosella in the area of Hasmas Mountains was mentioned previously by Pelin, 1965; Preda, 1967, 1973; Grasu, 1974. However, this...
Article
Provenance analysis of the sediments from foredeep basins is crucial in understanding the contemporaneous orogenic exhumation processes. We report in this paper complex sediment provenance analysis using sandstone petrography and mudstone geochemistry, combined with magnetic susceptibility of the Upper Miocene to Pliocene deposits from Focşani fore...
Article
In the Carpathian-Pannonian region in Neogene times, westward-dipping subduction in a land-locked basin caused collision of two lithospheric blocks with the southeastern border of the European plate. Calc-alkaline and alkaline magmatism was closely related to subduction, rollback, collision and extension. Previous paleomagnetic results (e.g. Panaio...
Article
Full-text available
We have analyzed ten samples with transitional paleodirections, according to Thellier-modified Coe and pseudo-Thellier methods for recovering paleointensity of the geomagnetic field. We fou than the normal ones and they are directly related with intermediary paleodirections.
Article
A reliable geological timescale for the Neogene sedimentary deposits of the Romanian Carpathian foredeep did not exist so far due to the lack of accurate isotopic datings and straightforward magnetostratigraphic correlations. Here we present a new chronology for the Upper Miocene to Pliocene deposits of the westernmost part of the eastern Paratethy...
Article
Full-text available
New K-Ar ages combined with paleomagnetic data demonstrate that the basaltic volcanism in the Perºani Mountains occurred in two relatively short phases. The first one lasted several tens of thousands of years around 1.2Ma and it seems that the inception of the volcanic activity took place in two isolated places and reached the maximum extent during...
Article
Full-text available
The Miocene magmatism of the Apuseni Mountains in the Carpatho-Pannonian area hosts some of Europe's largest porphyry epithermal Cu–Au ore systems associated with shallow subvolcanic intrusions. Detailed field observations combined with K–Ar ages, geochemical analyses, Sr–Nd isotopes and paleomagnetic data constrain a model for the geotectonic evol...
Article
Full-text available
This work aims to make a detailed and reliable chronological framework for the Neogene sediments deposited in the Paratethys area with special focus on the Romanian segment of the Carpathian arc (Focsani Basin). It is partly integrated in a multi disciplinary project of the Netherlands Research Centre for Integrated Solid Earth Sciences (ISES) "Pos...
Article
Abstract The first detailed record of mineral magnetic properties of a loess-paleosol profile comprising four loess horizons, three interbedded paleosols and recent soil at the top in the southeastern Danube plain (Romania) is presented. A strong contrast between the soil and loess susceptibility as well as other concentration dependent parameters...
Article
Full-text available
New K-Ar data from the Apuseni Mountains Neogene volcanic area are presented. When combined with geological and magnetic polarity data, the new data clarify the duration and evolution of this volcanic area. They show that the Neogene volcanic activity took place during the Late Badenian-Pannonian (15-7 Ma). The beginning of calc-alkaline andesitic...

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